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Finding the Fourth Proportional to 65,915.79, 90,963.61 and 35,700.99

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Solution

The fourth proportional to 65,915.79, 90,963.61 and 35,700.99 is: 49,267.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,915.79 : 90,963.61 = 35,700.99 : x
  2. Step 2: Convert to fraction form
    65,915.79/90,963.61 = 35,700.99/x
  3. Step 3: Cross multiply
    65,915.79x = 90,963.61 × 35,700.99
  4. Step 4: Simplify right side
    65,915.79x = 3,247,490,930.97
  5. Step 5: Solve for x
    x = 3,247,490,930.97/65,915.79
  6. Step 6: Final answer
    x = 49,267.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.